Machine for stripping hollow articles from their forms.



W.'A,. BRUBAKER.

MACHINE FUR STRIPPING HOLLOW ARTICLES FROM THEIR FJRMS.

APPLICATION FILED OCT- 30. I9I6.

Patenzed Mar. 27, 1917.

4 SHEETS--SHE'ET I;

v I I mw 8mm ab@ QM L O O 7! XIII N o ,o

w. A, BRUBAKEYR. MACHINE @DE SIRHPFNG` HOLLOW ARTICLES FROM THEIR FORMS.

#t APPucATloe FILED oc'r. au, wxs.

1,220,177'. Patented Mar. 27, 1917.

Inventor.-

, v fw. A. BHUB'AKER. MACHINE FOR STRIPPING HOLLOW ARTICLESFHUM THEIR FORMS.

`Paenued Mal. 27, 191,7

4 sains-SHEET a.

APLlCATlON FILED OCT. 30. 1915.

P: Ltentedm Mur. 2T, 1917.

baken I 4 SHEETS-SHEET 4.

lin/vento?" after vulcanized.` Considerable,ditliculty hasv Abeen heretofore experienced in removing Referring by reference cha ri VUniT1311)' saeiiriis'i'uiniiiai onirica,

WILIiIAM A. BBUBAKER,' OF AKQRON, OHIO, ASSIGNOR T0-TH2E MILLER RUBBER COMPANY, 0F AKRON .QHIO, A CORPORATION 0F OHIO.

MACHINE Fon 4sentiremo; HoLLow ARTICLES FnoM mi EIR Fonms. i

` Srpecicatiun of Letters Patent. Pute) [ted [313 27; 19171 Application filed October 30, .1916. Serial No. 128,543.

To' all whom it may concern:

Be it knownthat I, WILLIAM'A. BimisAiti-m, a. citizen4 ot the United States, and resident of Akron, Ohio, have invented certain newand useful Improvements in Macliinesfor Stripping Hollow Articles from their Forms, of which the following is `av specification.`

This invention relates to apparatus for the stripping or removal ot' flexible articles from the forms on which they are formed lor treated, such, for instance, as toy balloons and', similar articles w'hich are constructed by the dipping of glycerin coated foi-nis 11i a suitable rubber solution which are therethese articles, whichis not only due to the character of tlie'ai'ticle itself but also to the fact that the form is coated with `i 'l \,'cerin or othersiinilai material to prevent.. the balloon fromsticking to the. forni. Ydien-the strippingeoperation is commenced and the article begins to turn inside out, the, inner glyc- W-hicli, diie to its extreineslippery nature, greatly iinpedes the stripping actionl i Among the objects of the present inven'- tion are' to provide a machine or 'apparatuswhich `will support the forms and expedi- 'tiousl 'effect the stripping yof the balloons there rom. I have also aimed to provide means for overcoming the ditiiculty caused ,includes the novel features ot Vconstruction and arran 'ement of parts hereinafter described an( illustrated in the accompanying drawings, the invention being defined by lhe claims appended hereto.

AnJen'ibodiinent'of my invention is illustrated in the accoinlninying drawings, in

Figurel is a plan view of the machine, -Fig 2 is a sidc elevation ot tlie saine, v Fig; is a Vview at right angles to li ig. 2.

Figs-4 and 'are detail views ou a larger :tersto these drawings, the I'iunieral 1 designates a lbase plate, upon which the other parts ot the machine are supported. Located upon the erin coateds'urface is 4presented for con-tact:

base plate 1 is a pedestal 2, which in turn supports avertical sliat't', upon which is rotatably mounted a circular tableor'car.'

rier 4, ca rryng,r a beve ed gear The pedestal 2 also supports a horizontal bearing 6, through which a shaft 7 extends. IThe shaft 7 is provided at one extremity with a beveled gear 8 meshing with the bevel gear 5, and rotation of slia't't 7 is imparted through beveled gears 8 4and 5 to the table 4. lTable 4 is provided with aplurality of concentric vertical fianges uiff-"and 4*?. Equally spaced around table l are spring pressed plungers 1) extending radially ffom the center of said table andhaving sqiared portions 9. at their .outer extremities and vertical pins 9* at their inner extremities. The annular Hangul supports a ci 'cular plate 10 having radial slots 10 correspondingly spaced with the spring plungers 5), in which pins 9b enter` and hold the plungeri: against turning and also limit the radial ni ivcnient thereof. The squai-'ed portions-ibo:l the spring plungers flareprovided with "erticalpins 9 of dimensions suitable to correspond with the holes in the forms uied. Portions 9, are also provided with studs 9 screwthreiuled to their lower sides an l surrounded by antifrietionrollers 11. lhe annular fiange -Lb of the circular plate is provided with' an outwardlyv extending iiin lcat its upper edge. said rim being provided with ,semicircular notches (see Fig. 1), whose positions correspond with the positions ot' pins 90. 'lliescnotches are torn ied in such va way that when springbolts 9' are forced to their inward limits, the pins 9"-.will be concentric with said semi-circular notches, and the walls ot said notchesl willprevent upward displacement ot' the v'ooden forms located upon pinsl 9", by cngiginllr enlarged bases or flanges, o ii the tori is w iich cannot pass through the notches (see Fig` Also slippoi'ted from base plate 1 are vertical columns f so that the forms may be easily placed there-V on and removed therefrom.

Referring now to shaft 7, which passes through bearing 6 and carries the beveled gear 8 atits one extremity, as before stated,

'this shaft carries at its other eiitremit "a Whose opposite end connected toy base platev 1. Roller 17 bears upon a cam 19 fast on one `extremity of a horizontal shaft 20, said horizontal shaft being continuously driven at a suitable speed. It will thus he. seen that by the means described, table 4 will be given a step by step, or intermittent, motion, the shape of cam 19 and dimensions of 'levers 15 and beveled gears 8 and 5 being lsuch that the angular motion imparted to l table 4 by one revolution of shaft() will correspond with the dista-nce between any two adjacent pins 9c`upon table 4. Shaft 20 derives its power through Worm gear 21 meshing with Worm 22 fastened on a. horizontal shaft 23 lwhichcarriesgear Wheel 24 at its other extremity', which in turn meshes with gear 25 on oWer shaft 26, which latter may be provlded with a pulley 27, 'or other driving means.

Base plate 1 is provided with a bracket 28 having two bosses 28a at its upper extremity, said bossesv 28 supporting rigid vertical guide rods or bars 29, which are connected together at their upper' extremities by a tiebar 30 insuring the equal spac-4 ing of. the same. A. carriage'l is arranged. to reciproca-te vertically Qn these gludebars 'and is operated by a rolier 32 impinging on' a cam Cam 33. is keyed upon a shaft 34, which also carries a gear 35, which in turn is driven through an intermediate gear 36 from a driving gear 37f mountedupona. shaft Shaft 38 carries atits opposite ex'- tremity a beveled gear 39 meshing with a beveled gear- 4() located upon` shaft 20. Through the aforesaid gearing, cam BBand cam roller-.32, carriage 31 is caused to slide vertically upon guide bars 29. Carriage 31 has suitable bearings which supportaJ vertical shaft 4.1 and the lower end lof saidshaft is provided with a' spline or key-way and projects through a Iquill beveled gear'42, which also meshes` r`with beveled. gear -40 upon shaft v20, deriving motionl therefrom.

'Through this mechanism shaft 41 is rotated continuously, regardless of this vertical 1o- .cation of carriage 31. AShaft 41 is provided at its upper extremity With a hevelefhgear'- 43'ixed thereon. --Carriage presided' withhorizontal bearings 31 v(ser Fig. 4)

eled gear 49 which meshes with 'aforesaid beveled gear 47.` 'Shaft 48 also supports a spur gear 50. Carriage 31 su ports horizontal shafts 5,1 and 51" par-ariel to shaft 48 and ,equally spaced therefrom, which shafts 51a and 51" carry at one' end spur 50 on. shaft 48, and on their opposite ends beveled gears Mft-"and 54". Sha ts 51*l and 'gears 528L and 52", meshing with spur g'ea'r 51" also support arms 53* and 53" whichare pivoted thereon. Arms 5 3L and 53" are provided with bearings in whichgai'e mounted longitudinal shafts and 55", which are' provided withbeveled gears 56L and'A 56",

meshing with gears 54L and 5'4", but eppoi' sitely"'located so as to cause opposite directions `of rotation in shafts 55'L and 55". Shaftsyfra and 55" are provided at their lower extremities with beveled gears 5 7* and 57" fast thereon. Said arms 53I1 and 53" are provided at their lower extremities with horizontal bearings in which vare located shafts 58 and 58" carrying beveled gears 59 and 59" meshing respectively Vwith bevel gears 57,\jand 57". Fast on shafts 58 and 60 and 60" located in such-a position .that

the line of travel of pins 9 'passes equi` distantly between said rollers, as shown in Fig 5. Rollers 60 and 60"'may be made of 58" ,are eoncave-faoed composition rollersany suitable Vfrietional material, but I pre'-4 fer t0 make them of asoft rubber composition.

atan angle -of 90 thereto. Said'shaft 61 carries a spur gearA 62 (Fig. 2),"Vwhich meshes Wi'thfspur gear'46 carried 'by 'shaft Carriage 31 supports 'a Ahorizontal shaft :61, which is .placed above sha'ft`48 and 4 4. Shaft =61 also carries opposed face cams 63" and 63" fastened .thereto (see Fig. 5)',

Arms 53 and 53" are provided with cam rollers 64 and 64" which impinge against l' cams 63' 'and 63", and said varms are also 'provided with crossed horizontal extensions (55xl and, .65" which are provided with eyebolts ".land 66" at their outer extremities. A tension coil spring (37 connectedbetween- 60" independent ofthe continuous rotation 'of said rolls.v

At a certain interval in the operation this machine the table 4 will berateheted tosuch a position that one `of the pins 9e carrymg a form, will pass to`a position equi- 'distant between thc rollers 60 and 60", and at this point the tablcT-twill rest. The. cam 33 issynchronized with-the cam Il) which rotates lthe table 4: and saide eam 33 is ot' sueh'` shape that carriage -ll will have reached :its'lowest position at the same instant that table 4c eoines to rest. Cams U3 and .(l" are also synchronized with cams 33 and lll and will be of snel-i shape that at the atorestated instant the emu-position rollers (50 and (30" will be at their farthest distance apart. 'llie-shape ot' eams lill and tll" is sueh that during;r the periodwhen the table -lis at rest` the composition rolls o and 60 travel toward each other until they eoine in contact with `thel lowest position uponV the,

toi-m. During this time eam 33 is laid out with a dwell so that carriage 3l is also resting during this eriod. During the next interval eam 33 iorees the carriage Ill npwardly and cams (53 and (5E-l" are laid out to such shapes that the eomposition rollers 60 .`60" vmay follow the shape ot' said torni approximately,,any yirregnlaritief-i in said tormibeineV taken eaae of by thelt'aet that rollers `G0, 60"; are. spring pressed by spring `6l' to 'ard the form and are held to approximately theV shape. .ot' the form of cams (S2-l,

6'3".- VIt will he noted that during these ope 'ations eomposition rollers 00` (l0b are operating in continuous opposite, rotation, said vrotation beingot' sueh a direction as to roll the, rubberarticle toward the upper extremity of'thc form, and as Carriage 31 rises,

35 -rolls (30,"l `(l0".w;illcontinue to keep in contart with then-oiled np portion of said b allargest diameter of'said forni, rolls o0, (30" will continnetto separate rather than follow the. shape ot' the foi'in and will vbe `tar enough apart so that as the table Je starts to `rotate the second time, there, will be ample spare between the, armsv, 53" for the said t'orm to pass between said arms to its next position and for the next forni, upon table 4, to take 4.the position assumed by the t'orm first menvi tioned.' .vlllho'carriage 31 now deseends rapidly, atth'e. same. time'the arms 53, 53" being heldvapart until the first position desafribed` is assumed. I also provide the maeli-ine, with a containing tank ($8 having a sitter meehanism (lil. simulating a tionr sieve` whiclrmaj becontin-i'lously driven from any vconvenient part of the. machine` sueh as a Sprocket 70 located upon shaft (l1 and pro- `vided with `a chain 7l. I also provide the machine witlia. cliuti 7,9 extending from -sa'id sii'ter (itl to a po, 'tion vertieallv above the. position assumed b Hupon.:"1`he purpose ioii'said container (5H is toliold ay supply of-talc or soap stone` powder. which .I ind necessary to the sueeessful operation ot' the. machine, duo to the iaet that the eomposition rollers ('0 aeeumulato 65 a coating of glycerin, with which thc ,the form operated rotatable stripping rolls mounted for movement toward and t'rom ea'eh other to vieldingly bear against said form. and means tor bodily moving r lsaid sripping rolls perpendieularly ot' the form.

2. In an apparatus ot' the class deseribed, a moving carrier `t'or supporting a `iorm bearing an artiele to )e stripped therefrom. rotatable stripping rolls mounted for movement toward and t'ron each other to vielding'l)r bearv against raid form. means for bodil)Y moving said stripping rolls perpendieularly ot' the t'orir. and means' for feeding friction prtalncirg material to prevent slipping' of the rolls in the article.

tl. ln an apparatus ot' the elass deseriladI` an intermittently moving earrier for supporting forms bearing: artieles to be stripped therefrom, rotatable stripping' rolls mounted for movement tuvard and t'rom eaeh other to emhraee and .'ontaet with the forms, and means Jf'or imparting: bodil \v movement to said rolls lengthwise ot' the forms while the carrier is at rest.

4. In an apparatus ol the elass described. an intermittingly inwingr earrier for snpporting r forms bearing artieles to be stripped therefrom. rotatable :tripping rolls mounted for movement toward and from each other to embrace and colitaet with the forms', means for imparting; bodily movement to said rolls lengthwise of the forms while the earrier is at rest. and means t'or leedii'ig lrietion producing' material latween`the rolls and a rtiel'es on the forms. jf.;

5. ln an apparatus ot' the (dass described, a pair of rotating lr-ippin,|,` rolls movable toward and from eich other while spaeeil apa rt` means tor imp itil-ting bodily movement to said rolls in a plane ptrpelnlienlar to the plane ot' their-move nent toward and from each other. and meal s for presentingV a t'orm bearing an article te be stripped therefrom between said rolls al d holding' it durinlgr the bodily movementof the rolls.

In an apparain; ot' the elass desiribed. an intermittingrly n oving;f carrier for slipportingr l'orms for bearing;- artieles to be stripped therefrom. i pair of rotating stripping' rolls movable toward and from eaeh other while spared a mrt and movable bodily in a plane per|wmleular to the plane ol' movement olf the ral rier. and means l'or impalliner sueh bodily movement to the rolls While embracing the form when the carrier isV at rest. l

7. In an apparatus of the class described, an intermittingly moving carrier, for supporting forms bearing articles to be. stripped therefrom, a pair of rotating stripping rolls movable toward and from each otherhvhile spaced apart and movable bodily in a plane perpendicular to the plane of movement of the carrier, means for imparting such bodily movement to the rolls while eml'iracing the -form when the :arrier is at rest, and means for feeding friction producing n'iaterialduring the stripping action.

8. In an al'iparatus of the class described.l a support for a form bearing an articleto be stripped therefrom, a plurality of stripping membersy movable toward and from each other while spaced apart, means for yieldingly pressing said members toward each other, means for positively moving said members away from each other against the yielding action, and automatic means for causing a separation of said support and Stripping members while said members are in stripping relation to the form.

9. In an apparatus of the classdescribed, an intermitting-ly moving support, for a form bearing an article to be stripped `therefrom, and a pair of stripping members for embracing said form and operable while the support is stationary to strip said article from the form.

10. In an apparatus of the class described, an enfllcss moving carrier, means for removably holding on said carrier forms for oarrying articles to be stripped therefrom, a plurality of rotatable friction members lmountcd. for mov-'ement toward a common center while out of contact with each other, means for causing a relative separation of the friction members and carrie( in a planc' perpendicular to the carrier while said friction members are, in engagement, and means for rotating said friction members.

11. In combination. a rotary table having a step by step movement, ladapted to carry forms bea ring articles to be stripped therefrom, a plurality of stripping members located at a fixed point in the travel of the table, and means for separating said members to permit entrance of a form thcrcbctween, causing them to frictionally engage the form and movobodily away from thc table while in such engagement durin'r the time the table is stationary and linalllyA reI turn toward the table in open position to receive a fresh form.

12, In combination, a support for detachably holdinga form carrying an article to be stripped therefrom, a plurality of opposed rotating stripping rolls, cam con, trollcd means for holding thcm spaccd apart and varying thc distance therebetween whilil so spar-cd, tons-ion nwans tending to yieldingly press salu rolls toward each other, and means for moving said'rol'ls bodily away .from the form support.

13. In combination, a support for detachably holding a form nearing an article. to be stripped therefrom, a plurality of opposed rotating stripping rolls, spring means for pressing said rolls toward each other, cam controlled means for intermittingly forcing said rolls apart against the action of the springs, and automatic,means for causing said rolls and said support to have relative bodily movement toward and from cach other.

, 1l, In combination, a support for detachably holding a form carrying an article to be stripped therefrom, a carriage movable toward aml from the support, a pair of levers supported from said carriage, apair of stripping members supported from said levers, spring means acting on said levers tending to press said stripping mcmllers into contact with the form, caln means (fo-acting with said levers to force the rolls apart against the spring tension and 'means for reciprocatimr said carriage. y

15. In combination,` a support for detachably carrying a form bearing an article to be. stripped therefrom. a pair of levers carrying co-acting rotating stripping rolls, spring means acting on said levers tending to rock them to hold the rolls in contact with the form, caln nieans acting on said levers to Aforce theln apart against the tension of the spring means, and supporting means for said levers operable to moveI the sametoward and from the support.

16. In combination an intermittingly mov. ing endless carrier, meatns for detachably connecting. thereto forms forv carrying articles to be stripped therefrom, a pair of rotating stripping rolls located at a lixed point in the travel of said carrie' and Vmovable toward and from each other while out of contacty with one another, and means for moving said rolls bodily in a plane perpendicular to the table in unisonl willi the intermittent movement thereof.

17. Incombination, an endless moving carrier, spindles' carried thereby', adapted to carry forms for supportingarticles to be stripped therefrom, said forms having base .f llangcs, means carried by the carrier for engaging lsaid base flanges to hold the forms to the carrier, up\\ard|y rotating spaced rollers located'at a ixed point in thc lravcl ol` thc carrier for stripping articles from the l'orms` and means l'or moving the rolls bodily a way l'rom the carrier during the stripping action.

1H. ln combination, a rotating table, a

pluralitv ol' radially arranged reciprocating plungers` means l'or alternately extending and rclracting said plungcrs, spindles carried by the onli-r cnils ol said plungcrs,

ends of said plungers for carryingr forms having' projecting hase flanges, said tablc having,r an annular flange provided Vwith recesses to receive the spindles and have their walls overhang the flanges when the plungers are retracted, cam means for retracting the plungers, and stri [ming means located at a fixed point in the travel of the table- 2l). ln (fonibination, an intermittingly moving horizontal carrier with means for olierating it, a carriage mounted to reripro catovra'tically in unison with the movements of the Harrier, a pair of levers pivotally supported froin'said carrier, said carrier being adapted to detachably carry 'forms hearing,r articles to be stripped therefroi'n, a pair of rotary stripping rolls carried by the lower ends of said levers in position to Contact with opposing sides of said forms, spring' means actingr on said levers tending to hold the rolls in contact with the form, cam means for operating on said levers to force the rolls apart, and driving means operating' tlirough said levers for rotating said` rolls.

`21. In an apparatus of the class descrilaal a support for holding an article to he operated upon in a fixed position, a pair of swinging' arms carrying rotary friction eleh ments adal'itcd to ilupinge on opposite sides of said article, means (nierating on said arms tending toyieldugly press the elen'ients into contact with the oplmsite sides of the article, and cam inians for (-ol'icrating with said a rticle 'arms for forcing the elenients away freni Aeach other, and means forl'rotating the eleL ments. l i

22,l In an apparatus of the class described, a support for holding anal-ticle to be operated upon,y in a liiieg` osition, a pair of swinging arms carryi ai," rotary friction ele ments adapted to irhpiige on opposite sides ofysaid article, means operatingon said arms tending to yieldingly press the elements into Contact `with the oppoiK ite sides of the article and 'itam means for (operating with said arms` foigiol'cilig the Aelements away from cacl other, means for bodily, moving said arias relative to the article, and means for rotating said elements. r

` 23. Tn. combination a support for an iorin, a carriage inovihle With relation to said support, la. pair ol levers pirotally sup ported from said carriage, -a pair of rotary friction elements carri. id by the lower ends of .said levers, means for reciprocating the carriage, and means fo r moving the friction elementeI toward and fi om each other.

In an. apparat-us of the class desori'bed, an intei1nittingly Inming carrier for supptn-tingforms bearing; articles to be stripped therefrom, stripi'iing e elnents mounted for morena-uit toward and from each other to ernlnaeeand contact Vith the forms, and means for in'iparting Jodily movement to said stripping elements lengthwise of the forms while the carrier is at rest.

ln an :uiparatlls ff the class described, a support for a. form hearing an article to to be operated upon Aof irregularbe stripped therefrom, a plurality of stripy ping members lnovalilo toward and from each other Whlle spaced apart, means for causing a separation (fsaid fsllppmrt and ture. i i' WILLIAM A. BRUBAKER. 

